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        <td class="header">&nbsp;Create Land Mask</td>
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<h3>Create Land Mask</h3>

<p>
    The Create Land Mask operation will turn any pixels on land into no data
    value. If the "preserve land" check box is set to true then all land
    pixels will be preserved and all ocean pixels will be set to no data
    value.</p>

<p>The
    operator will automatically download a course SRTM 5 minute DEM the
    first time it is used. This DEM is used to very quickly determine if a
    pixel is on land or in the ocean.&nbsp;</p>

<p>Alternatively, a geometry from the product could also be used. This could be a user create ROI or an imported Shape
    file.</p>

<p>The following parameters are used by the operator:</p>
<ol>
    <li>Source Band: All bands (real or virtual) of the source product. User can
        select one or more bands.
    </li>
    <li>Mask the Land: Checkbox indicating that land pixels will become nodata value.</li>
    <li>Mask the Sea: Checkbox indicating that sea pixels will become nodata value.</li>
    <li>Use
        Geometry as Mask: Select a geometry or ROI from the product to use as
        the mask. Anything outside the area will be nodata value.
    </li>
    <li>Invert Geometry: Anything inside the ROI or geometry will be nodata value.</li>
    <li>shorelineExtension: Extend the shoreline by this many pixels.</li>
</ol>
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<p><img style="width: 500px; height: 500px;" alt="" src="images/create_land_mask_dlg.jpg"><br></p>
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